Question

g(x)=x^2-10x-3 a) g(x+5) b) g(-x)

Answer 1

g(x) = x^2-10x-3
g(3) means put a 3 where you see an x
so
g(x+5) means put an x+5 where you see an x

Answer 2

i have for a) x^2+72

Answer 3

is that true?

Answer 4

x^2-10x-3
so
(x+5)^2-10(x+5)-3
x^2+10x+25-10x-50-3
x^2+25-50-3
x^2-28

Answer 5

If you have
\[g(x) = x ^{2} - 10x -3\]
and you want to find g(x+5)

you simply replace every 'x' in your original equation with an 'x+5'
So it now becomes
\[g(x+5) = (x+5)^{2} -10(x+5)-3\]
and simplify

the same for g(-x)
\[g(-x)= (-x ^{2}) -10*(-x)-3\]
[don't forget the square of a negative is positive!]

Hope that helped!

Answer 6

when i get this far on a) x^2+10x+25-10x-50-3
next step is to order terms before any math is completed?